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1da177e4 LT |
1 | #ifndef __ACPI_PROCESSOR_H |
2 | #define __ACPI_PROCESSOR_H | |
3 | ||
4 | #include <linux/kernel.h> | |
3b2d9942 | 5 | #include <linux/cpu.h> |
d9460fd2 | 6 | #include <linux/thermal.h> |
02df8b93 VP |
7 | #include <asm/acpi.h> |
8 | ||
ac212b69 RW |
9 | #define ACPI_PROCESSOR_CLASS "processor" |
10 | #define ACPI_PROCESSOR_DEVICE_NAME "Processor" | |
11 | #define ACPI_PROCESSOR_DEVICE_HID "ACPI0007" | |
12 | ||
1da177e4 LT |
13 | #define ACPI_PROCESSOR_BUSY_METRIC 10 |
14 | ||
15 | #define ACPI_PROCESSOR_MAX_POWER 8 | |
16 | #define ACPI_PROCESSOR_MAX_C2_LATENCY 100 | |
17 | #define ACPI_PROCESSOR_MAX_C3_LATENCY 1000 | |
18 | ||
19 | #define ACPI_PROCESSOR_MAX_THROTTLING 16 | |
20 | #define ACPI_PROCESSOR_MAX_THROTTLE 250 /* 25% */ | |
21 | #define ACPI_PROCESSOR_MAX_DUTY_WIDTH 4 | |
22 | ||
02df8b93 VP |
23 | #define ACPI_PDC_REVISION_ID 0x1 |
24 | ||
fd350943 | 25 | #define ACPI_PSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */ |
3b2d9942 VP |
26 | #define ACPI_PSD_REV0_ENTRIES 5 |
27 | ||
01854e69 LY |
28 | #define ACPI_TSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */ |
29 | #define ACPI_TSD_REV0_ENTRIES 5 | |
3b2d9942 VP |
30 | /* |
31 | * Types of coordination defined in ACPI 3.0. Same macros can be used across | |
32 | * P, C and T states | |
33 | */ | |
34 | #define DOMAIN_COORD_TYPE_SW_ALL 0xfc | |
35 | #define DOMAIN_COORD_TYPE_SW_ANY 0xfd | |
36 | #define DOMAIN_COORD_TYPE_HW_ALL 0xfe | |
37 | ||
4fcb2fcd VP |
38 | #define ACPI_CSTATE_SYSTEMIO 0 |
39 | #define ACPI_CSTATE_FFH 1 | |
40 | #define ACPI_CSTATE_HALT 2 | |
41 | ||
42 | #define ACPI_CX_DESC_LEN 32 | |
991528d7 | 43 | |
1da177e4 LT |
44 | /* Power Management */ |
45 | ||
46 | struct acpi_processor_cx; | |
47 | ||
48 | struct acpi_power_register { | |
4be44fcd LB |
49 | u8 descriptor; |
50 | u16 length; | |
51 | u8 space_id; | |
52 | u8 bit_width; | |
53 | u8 bit_offset; | |
718be4aa | 54 | u8 access_size; |
4be44fcd | 55 | u64 address; |
92c4d2ad | 56 | } __packed; |
1da177e4 | 57 | |
1da177e4 | 58 | struct acpi_processor_cx { |
4be44fcd LB |
59 | u8 valid; |
60 | u8 type; | |
61 | u32 address; | |
bc71bec9 | 62 | u8 entry_method; |
991528d7 | 63 | u8 index; |
4be44fcd | 64 | u32 latency; |
718be4aa | 65 | u8 bm_sts_skip; |
4fcb2fcd | 66 | char desc[ACPI_CX_DESC_LEN]; |
1da177e4 LT |
67 | }; |
68 | ||
69 | struct acpi_processor_power { | |
4be44fcd | 70 | int count; |
1da177e4 | 71 | struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER]; |
169a0abb | 72 | int timer_broadcast_on_state; |
1da177e4 LT |
73 | }; |
74 | ||
75 | /* Performance Management */ | |
76 | ||
3b2d9942 | 77 | struct acpi_psd_package { |
439913ff LM |
78 | u64 num_entries; |
79 | u64 revision; | |
80 | u64 domain; | |
81 | u64 coord_type; | |
82 | u64 num_processors; | |
92c4d2ad | 83 | } __packed; |
3b2d9942 | 84 | |
1da177e4 | 85 | struct acpi_pct_register { |
4be44fcd LB |
86 | u8 descriptor; |
87 | u16 length; | |
88 | u8 space_id; | |
89 | u8 bit_width; | |
90 | u8 bit_offset; | |
91 | u8 reserved; | |
92 | u64 address; | |
92c4d2ad | 93 | } __packed; |
1da177e4 LT |
94 | |
95 | struct acpi_processor_px { | |
439913ff LM |
96 | u64 core_frequency; /* megahertz */ |
97 | u64 power; /* milliWatts */ | |
98 | u64 transition_latency; /* microseconds */ | |
99 | u64 bus_master_latency; /* microseconds */ | |
100 | u64 control; /* control value */ | |
101 | u64 status; /* success indicator */ | |
1da177e4 LT |
102 | }; |
103 | ||
1da177e4 | 104 | struct acpi_processor_performance { |
4be44fcd LB |
105 | unsigned int state; |
106 | unsigned int platform_limit; | |
1da177e4 LT |
107 | struct acpi_pct_register control_register; |
108 | struct acpi_pct_register status_register; | |
4be44fcd | 109 | unsigned int state_count; |
1da177e4 | 110 | struct acpi_processor_px *states; |
3b2d9942 | 111 | struct acpi_psd_package domain_info; |
2fdf66b4 | 112 | cpumask_var_t shared_cpu_map; |
3b2d9942 | 113 | unsigned int shared_type; |
1da177e4 LT |
114 | }; |
115 | ||
1da177e4 LT |
116 | /* Throttling Control */ |
117 | ||
01854e69 | 118 | struct acpi_tsd_package { |
439913ff LM |
119 | u64 num_entries; |
120 | u64 revision; | |
121 | u64 domain; | |
122 | u64 coord_type; | |
123 | u64 num_processors; | |
92c4d2ad | 124 | } __packed; |
01854e69 LY |
125 | |
126 | struct acpi_ptc_register { | |
127 | u8 descriptor; | |
128 | u16 length; | |
129 | u8 space_id; | |
130 | u8 bit_width; | |
131 | u8 bit_offset; | |
132 | u8 reserved; | |
133 | u64 address; | |
92c4d2ad | 134 | } __packed; |
01854e69 LY |
135 | |
136 | struct acpi_processor_tx_tss { | |
439913ff LM |
137 | u64 freqpercentage; /* */ |
138 | u64 power; /* milliWatts */ | |
139 | u64 transition_latency; /* microseconds */ | |
140 | u64 control; /* control value */ | |
141 | u64 status; /* success indicator */ | |
01854e69 | 142 | }; |
1da177e4 | 143 | struct acpi_processor_tx { |
4be44fcd LB |
144 | u16 power; |
145 | u16 performance; | |
1da177e4 LT |
146 | }; |
147 | ||
01854e69 | 148 | struct acpi_processor; |
1da177e4 | 149 | struct acpi_processor_throttling { |
01854e69 LY |
150 | unsigned int state; |
151 | unsigned int platform_limit; | |
152 | struct acpi_pct_register control_register; | |
153 | struct acpi_pct_register status_register; | |
154 | unsigned int state_count; | |
155 | struct acpi_processor_tx_tss *states_tss; | |
156 | struct acpi_tsd_package domain_info; | |
2fdf66b4 | 157 | cpumask_var_t shared_cpu_map; |
ff55a9ce LB |
158 | int (*acpi_processor_get_throttling) (struct acpi_processor * pr); |
159 | int (*acpi_processor_set_throttling) (struct acpi_processor * pr, | |
2a908002 | 160 | int state, bool force); |
01854e69 | 161 | |
4be44fcd LB |
162 | u32 address; |
163 | u8 duty_offset; | |
164 | u8 duty_width; | |
1180509f ZY |
165 | u8 tsd_valid_flag; |
166 | unsigned int shared_type; | |
1da177e4 LT |
167 | struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING]; |
168 | }; | |
169 | ||
170 | /* Limit Interface */ | |
171 | ||
172 | struct acpi_processor_lx { | |
aee07ba6 | 173 | int px; /* performance state */ |
4be44fcd | 174 | int tx; /* throttle level */ |
1da177e4 LT |
175 | }; |
176 | ||
177 | struct acpi_processor_limit { | |
4be44fcd | 178 | struct acpi_processor_lx state; /* current limit */ |
1da177e4 | 179 | struct acpi_processor_lx thermal; /* thermal limit */ |
4be44fcd | 180 | struct acpi_processor_lx user; /* user limit */ |
1da177e4 LT |
181 | }; |
182 | ||
1da177e4 | 183 | struct acpi_processor_flags { |
4be44fcd LB |
184 | u8 power:1; |
185 | u8 performance:1; | |
186 | u8 throttling:1; | |
187 | u8 limit:1; | |
188 | u8 bm_control:1; | |
189 | u8 bm_check:1; | |
190 | u8 has_cst:1; | |
191 | u8 power_setup_done:1; | |
4f86d3a8 | 192 | u8 bm_rld_set:1; |
99b72508 | 193 | u8 need_hotplug_init:1; |
1da177e4 LT |
194 | }; |
195 | ||
196 | struct acpi_processor { | |
4be44fcd LB |
197 | acpi_handle handle; |
198 | u32 acpi_id; | |
828aef37 | 199 | phys_cpuid_t phys_id; /* CPU hardware ID such as APIC ID for x86 */ |
af8f3f51 | 200 | u32 id; /* CPU logical ID allocated by OS */ |
4be44fcd LB |
201 | u32 pblk; |
202 | int performance_platform_limit; | |
01854e69 | 203 | int throttling_platform_limit; |
ff55a9ce | 204 | /* 0 - states 0..n-th state available */ |
01854e69 | 205 | |
1da177e4 LT |
206 | struct acpi_processor_flags flags; |
207 | struct acpi_processor_power power; | |
208 | struct acpi_processor_performance *performance; | |
209 | struct acpi_processor_throttling throttling; | |
210 | struct acpi_processor_limit limit; | |
d9460fd2 | 211 | struct thermal_cooling_device *cdev; |
ac212b69 | 212 | struct device *dev; /* Processor device. */ |
1da177e4 LT |
213 | }; |
214 | ||
215 | struct acpi_processor_errata { | |
4be44fcd | 216 | u8 smp; |
1da177e4 | 217 | struct { |
4be44fcd LB |
218 | u8 throttle:1; |
219 | u8 fdma:1; | |
220 | u8 reserved:6; | |
221 | u32 bmisx; | |
222 | } piix4; | |
1da177e4 LT |
223 | }; |
224 | ||
fd350943 LB |
225 | extern int acpi_processor_preregister_performance(struct |
226 | acpi_processor_performance | |
a29d8b8e | 227 | __percpu *performance); |
3b2d9942 | 228 | |
4be44fcd LB |
229 | extern int acpi_processor_register_performance(struct acpi_processor_performance |
230 | *performance, unsigned int cpu); | |
b2f8dc4c | 231 | extern void acpi_processor_unregister_performance(unsigned int cpu); |
1da177e4 LT |
232 | |
233 | /* note: this locks both the calling module and the processor module | |
234 | if a _PPC object exists, rmmod is disallowed then */ | |
235 | int acpi_processor_notify_smm(struct module *calling_module); | |
236 | ||
c705c78c KRW |
237 | /* parsing the _P* objects. */ |
238 | extern int acpi_processor_get_performance_info(struct acpi_processor *pr); | |
239 | ||
1da177e4 | 240 | /* for communication between multiple parts of the processor kernel module */ |
706546d0 | 241 | DECLARE_PER_CPU(struct acpi_processor *, processors); |
1da177e4 LT |
242 | extern struct acpi_processor_errata errata; |
243 | ||
05131ecc | 244 | #ifdef ARCH_HAS_POWER_INIT |
02df8b93 | 245 | void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags, |
4be44fcd | 246 | unsigned int cpu); |
991528d7 | 247 | int acpi_processor_ffh_cstate_probe(unsigned int cpu, |
fd350943 LB |
248 | struct acpi_processor_cx *cx, |
249 | struct acpi_power_register *reg); | |
991528d7 | 250 | void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cstate); |
02df8b93 | 251 | #else |
4be44fcd LB |
252 | static inline void acpi_processor_power_init_bm_check(struct |
253 | acpi_processor_flags | |
254 | *flags, unsigned int cpu) | |
02df8b93 VP |
255 | { |
256 | flags->bm_check = 1; | |
257 | return; | |
258 | } | |
991528d7 | 259 | static inline int acpi_processor_ffh_cstate_probe(unsigned int cpu, |
fd350943 LB |
260 | struct acpi_processor_cx *cx, |
261 | struct acpi_power_register | |
262 | *reg) | |
991528d7 VP |
263 | { |
264 | return -1; | |
265 | } | |
fd350943 LB |
266 | static inline void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx |
267 | *cstate) | |
991528d7 VP |
268 | { |
269 | return; | |
270 | } | |
02df8b93 VP |
271 | #endif |
272 | ||
1da177e4 | 273 | /* in processor_perflib.c */ |
02df8b93 | 274 | |
1da177e4 LT |
275 | #ifdef CONFIG_CPU_FREQ |
276 | void acpi_processor_ppc_init(void); | |
277 | void acpi_processor_ppc_exit(void); | |
d81c45e1 | 278 | int acpi_processor_ppc_has_changed(struct acpi_processor *pr, int event_flag); |
e2f74f35 | 279 | extern int acpi_processor_get_bios_limit(int cpu, unsigned int *limit); |
1da177e4 | 280 | #else |
4be44fcd LB |
281 | static inline void acpi_processor_ppc_init(void) |
282 | { | |
283 | return; | |
284 | } | |
285 | static inline void acpi_processor_ppc_exit(void) | |
286 | { | |
287 | return; | |
288 | } | |
d81c45e1 ZY |
289 | static inline int acpi_processor_ppc_has_changed(struct acpi_processor *pr, |
290 | int event_flag) | |
4be44fcd | 291 | { |
1da177e4 LT |
292 | static unsigned int printout = 1; |
293 | if (printout) { | |
4be44fcd LB |
294 | printk(KERN_WARNING |
295 | "Warning: Processor Platform Limit event detected, but not handled.\n"); | |
296 | printk(KERN_WARNING | |
297 | "Consider compiling CPUfreq support into your kernel.\n"); | |
1da177e4 LT |
298 | printout = 0; |
299 | } | |
300 | return 0; | |
301 | } | |
e2f74f35 TR |
302 | static inline int acpi_processor_get_bios_limit(int cpu, unsigned int *limit) |
303 | { | |
304 | return -ENODEV; | |
305 | } | |
306 | ||
4be44fcd | 307 | #endif /* CONFIG_CPU_FREQ */ |
1da177e4 | 308 | |
4d5d4cd8 | 309 | /* in processor_core.c */ |
828aef37 CM |
310 | phys_cpuid_t acpi_get_phys_id(acpi_handle, int type, u32 acpi_id); |
311 | int acpi_map_cpuid(phys_cpuid_t phys_id, u32 acpi_id); | |
2e9d5e4e | 312 | int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id); |
78f16996 | 313 | |
24119a88 HG |
314 | /* in processor_pdc.c */ |
315 | void acpi_processor_set_pdc(acpi_handle handle); | |
316 | ||
1da177e4 | 317 | /* in processor_throttling.c */ |
239708a3 | 318 | #ifdef CONFIG_ACPI_CPU_FREQ_PSS |
a66b34b2 | 319 | int acpi_processor_tstate_has_changed(struct acpi_processor *pr); |
4be44fcd | 320 | int acpi_processor_get_throttling_info(struct acpi_processor *pr); |
2a908002 FP |
321 | extern int acpi_processor_set_throttling(struct acpi_processor *pr, |
322 | int state, bool force); | |
5a344a50 ZY |
323 | /* |
324 | * Reevaluate whether the T-state is invalid after one cpu is | |
325 | * onlined/offlined. In such case the flags.throttling will be updated. | |
326 | */ | |
327 | extern void acpi_processor_reevaluate_tstate(struct acpi_processor *pr, | |
328 | unsigned long action); | |
070d8eb1 | 329 | extern const struct file_operations acpi_processor_throttling_fops; |
1180509f | 330 | extern void acpi_processor_throttling_init(void); |
239708a3 AC |
331 | #else |
332 | static inline int acpi_processor_tstate_has_changed(struct acpi_processor *pr) | |
333 | { | |
334 | return 0; | |
335 | } | |
336 | ||
337 | static inline int acpi_processor_get_throttling_info(struct acpi_processor *pr) | |
338 | { | |
339 | return -ENODEV; | |
340 | } | |
341 | ||
342 | static inline int acpi_processor_set_throttling(struct acpi_processor *pr, | |
343 | int state, bool force) | |
344 | { | |
345 | return -ENODEV; | |
346 | } | |
347 | ||
348 | static inline void acpi_processor_reevaluate_tstate(struct acpi_processor *pr, | |
349 | unsigned long action) {} | |
350 | ||
351 | static inline void acpi_processor_throttling_init(void) {} | |
352 | #endif /* CONFIG_ACPI_CPU_FREQ_PSS */ | |
353 | ||
1da177e4 | 354 | /* in processor_idle.c */ |
5f05586c AC |
355 | extern struct cpuidle_driver acpi_idle_driver; |
356 | #ifdef CONFIG_ACPI_PROCESSOR_IDLE | |
38a991b6 DL |
357 | int acpi_processor_power_init(struct acpi_processor *pr); |
358 | int acpi_processor_power_exit(struct acpi_processor *pr); | |
4be44fcd | 359 | int acpi_processor_cst_has_changed(struct acpi_processor *pr); |
46bcfad7 | 360 | int acpi_processor_hotplug(struct acpi_processor *pr); |
5f05586c AC |
361 | #else |
362 | static inline int acpi_processor_power_init(struct acpi_processor *pr) | |
363 | { | |
364 | return -ENODEV; | |
365 | } | |
366 | ||
367 | static inline int acpi_processor_power_exit(struct acpi_processor *pr) | |
368 | { | |
369 | return -ENODEV; | |
370 | } | |
371 | ||
372 | static inline int acpi_processor_cst_has_changed(struct acpi_processor *pr) | |
373 | { | |
374 | return -ENODEV; | |
375 | } | |
376 | ||
377 | static inline int acpi_processor_hotplug(struct acpi_processor *pr) | |
378 | { | |
379 | return -ENODEV; | |
380 | } | |
381 | #endif /* CONFIG_ACPI_PROCESSOR_IDLE */ | |
1da177e4 | 382 | |
5f05586c | 383 | #if defined(CONFIG_PM_SLEEP) & defined(CONFIG_ACPI_PROCESSOR_IDLE) |
0a3b15ac RW |
384 | void acpi_processor_syscore_init(void); |
385 | void acpi_processor_syscore_exit(void); | |
386 | #else | |
387 | static inline void acpi_processor_syscore_init(void) {} | |
388 | static inline void acpi_processor_syscore_exit(void) {} | |
389 | #endif | |
390 | ||
1da177e4 | 391 | /* in processor_thermal.c */ |
4be44fcd | 392 | int acpi_processor_get_limit_info(struct acpi_processor *pr); |
9c8b04be | 393 | extern const struct thermal_cooling_device_ops processor_cooling_ops; |
239708a3 | 394 | #if defined(CONFIG_ACPI_CPU_FREQ_PSS) & defined(CONFIG_CPU_FREQ) |
1da177e4 LT |
395 | void acpi_thermal_cpufreq_init(void); |
396 | void acpi_thermal_cpufreq_exit(void); | |
397 | #else | |
4be44fcd LB |
398 | static inline void acpi_thermal_cpufreq_init(void) |
399 | { | |
400 | return; | |
401 | } | |
402 | static inline void acpi_thermal_cpufreq_exit(void) | |
403 | { | |
404 | return; | |
405 | } | |
239708a3 | 406 | #endif /* CONFIG_ACPI_CPU_FREQ_PSS */ |
1da177e4 | 407 | |
1da177e4 | 408 | #endif |